Governing and throttling device for internal-combustion engines.



, A. H. ZIEGLER. GOVERNING AND THROTTLING DEVICE FOR INTERNAL COMBUSTION ENGINES.

. APPLICATION FILED AUG.20, 1913.

Patented June 8, 1915.

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G'QVE ENING AND THEOTTLING DEVICE FOR ZITEGLEB, 0F OSHKGSH, WISGONSIN.

INTEBNAL-CQMBUSTION ENGINES.

present invention to automatically to a greater or less extent in case the engine increases in speed and thereby tends to increase the vacuum in the inlet pipe through the more rapid inspirations of the engine cylinder or cylinders. This movement of the valve effectually throttles the engine and returns it to normal speed or decrease in engine speed, the valve moves the other way, reducing, the throttling effect and permitting the engine to take larger charges and thus return to normal speed, or nearly to normal speed.

The particular embodiment here illustrated, includes a supplemental valve for governing the admixture with the intake fluid of gas, steam or the like, this valve be ing ellectively connected with the main valve and controlled thereby to time the admission of the supplementing liuid to the load conditions of the engine, as for instance admitting more steam. or gas during periods when the engine may be operating under appreciable loads and when the throttle valve is therefore open, and cutting down or completely eliminating the admission of the supplementing steam or the like, at periods when the engine is operating at no load or when the load is more or less reduced and the throttle valve nearly closed.

One embodiment of my invention is disclosed in the accompanying whercin- Figure 1 is a plan view of a four-cylinder engine equipped withuny improved combined automatic governing, and throttling device. Fig. 2 is a sectional elevation of the combined governing and throttling device.

In the drawings four engine cylinders are Specification of fLetters Patent.

ALBERT H. Zmennn, a

the tollowing is a spec1fi-' indicated by the drawings,

Patented June 8,19l5.

- Application filed August 20, 1913. Serial No, 785,641.

shown provided with any suitable type orv form of inlet valves 1 receiving fluid from an inlet pipe or manifold 2. There may be more or less than four cylinders and the arrangement of inlet valves and manifold may be modified in various ways, neither the engine nor the manifold comprising any part of this patent, but in the embodiment illustrated, the manifold 2 carries at its center and positioned adjacent to the two middle cylinders, the automatic vacuum controlled device and throttle valve 3 shown in detail in Fig. 2. In theembodiment illustrated in Fig. 2 the structure comprises a throttle case or body 4 with a cap or cover 5 through which is inserted a valve stem 6. Slidingly mounted on this valve-stem is a throttle and governor valve head 7 controlled as to position by a governor spring 8 of helical form or other suitable shape and seating at its upper end against a sleeve justahle along the valve stem to control the setting of spring 8 and which when once adjusted moves in unison with the valve stem as that stem slides up and down in cap 5. A control arm 10 actuated by a audio as shown, or through a crank and link as indicated in dotted lines, cooperates with the socket 11 on the valve stem for lifting the valve stem and the throttle valve and to hold the same in any desired position, as oocasion may require. Passages 12 are provided through the bottom of the case or body 4.- for the admission of air, gases or vapors to the case.

When the engine vacuum created by the engine inspirations in the manifold pipe 2 and in passages 13, 14 and 12, causes a flow of air, gas or vapor or a combination of the same in. the direction arrows. The throttle and governor valve head 7 acts in part as any other type of throttle valve,,that is, it may be placed in open or closed position or in any intermediate position, at the will of the operator, thereby effecting manual control of the engine speed and power as desired. However, because of spring 8 and because the valve head 7 is mounted to slide on the valve stem 6, the head may travel. along the valve stem, partially closing or restricting the effective area under the head at passage 13, due to the inrush of fluid anddue to the 9 which is adautomatically,

normal speed.

.-"action of sprin eliminated.

ing therewith. This sliding movement of head 7 along the valve stem in opposition to the spring 8, is suiiicient to produce a balance betweenthe force of the spring and the etlect of the fluid im act and vacuum action on the valve head; i 11 other words the valve head floats along the valve stem with the spring 8 balanced a (I inst those forces which tend to close the valve. Should the engine, 10 f in case of a slowingdownof the engine, the-vacuum on the inlet pipe will be reduced througlfthe slower cylinder inspirations, thus permitting the spring 8 to push head .7 farther open and so reducing the throttling efl'ect and permitting the en: glue to take larger charges and to regain its If when normal speed is attained the tendency to decreased rotative speed is non-existent, the head 7 returns to normal position. This automatic action of the valve head takes place at any setting of the throttle controlling practically instantaneously and therefore can be used for any condition of load or engine speed or both, from no load slow speed, or no load high speed, to full load low speed pr full load high speed, and the throttle is to all practical intents and purposes as efmensions of which are head :to throttle fective as in any other type and the governor is able to keep the engine at the desired speed within small limits, irrespective of changes in the load and without the necessity for the use of any other form of gov ernor. Sleeve 9, though adjustable at will to change the tension of spring 8, need not ordinarily be changed, for once correctly adjusted, the valve head will respond as desired. With a spring, the strength and di-' accurate for the particular conditions of service, sleeve 9 may be eliminated or made as one piece with stem 6. v

Other changes and modifications in the mounting of the spring and of the valve head, may be made, but in general the head should have a sliding movement, automatically governed by the arlion of the engine cylinder hispirationshnd independent of the manual control-employed for moving the the engine.

The shoulder 16 on stem 6 limits the motendency to increased rotative form and dimension,

hand lever and acts "alinement with the tion of head 7 under the action of its spring 8.

A guide hub 18 supported by one or more ribs or webs 17, which may be cast integral 'with'the throttle casing 7 or separatelyinsorted steadies the lower end 19 of the valve stem and may act as a stem in its outward motion.

The diameter of the throat 520 through which the fluid passes after passing the valve is of such size as to give merely a sliding fit for the valve head 7 when that head is pulled all the way shut or nearly so, as when stopping'or slowing down the engine. The edge of this passage at 15 may be beveled oil to insure the easy and regular control of small quantities of air, gas or vapor at light loads and medium speeds or low speeds and for producing evenness of the rotative speeds under these conditions. One or more slots or notches 21 of V-shape or other-suitable may be placed at the outer circumference of valve head? and serve as a means for easy and regular control of the engine speed atvery slow speed or at no load, or. both, by cutting down the amount of charge passing the throttle to a small amount and easy adjustment of the volume without requiring troublesome infinitesimal adjuststop for the valve giving an accurate and tative speed. p

The operation of this automatic vacuum operated governing device and' combined, is independent-in action of the particular position or location with respect to the other parts of the engine and maybe inverted or may be placed horizontal "or otherwise shifted without substantially al tering its action and without any impair-\ ment in efliciency.

The apparatus above described, is eomice plete for the purposes mentioned, but when used on engines requiring an admixture-of water, Water vapors or other gases with-the cylinder charges, a supplemental or auxiliary valve may be included as a part off the throttling and governing mechanism} as hereinafter described.- v

In the embodiment illustrated the" feed pipe for the vapor, gas or air tobe admixed {with the main body of the fluid, is 21023 in i J communication with a passage v2t leading t o 5 a "alve chamber 25, wherein is incldsed a spring 26 actin on a puppet valve 2?,thh stem of which 1s shown to be guided bya recessed plug 28 suitably positioned in' axi'r valve stem 6 of! throttling device. Steam, water vapors g ,eir haust gases, air or other fluid'flor fluid mix; ture is let into valve (chamber 25 through pipe 23. Valve 27 is normally held; closed by spring 26, aided possibly bythe ar -an 1n passage 12, but the valvestem 6 is pro VIlClGd'Wlth an extensionlll and this ext sion is long enough lent to any portion of ture will be permitted.

' provided to touch valve puppet 27 and to communicate to said puppet, either the entire or any portion of the motion of valve stem 6, that is the extension 19 may touch puppet 27 at all times and therefore cause said puppet to move at the same time and to the same extent as the extension or the extension may be shortened to such a degree that it comes i to contact and produces movement of puppet 27 only at the extreme end of its travel, or any variation between these two limits, may be effected to produce a movement of the puppet, equivathe entire movement of the extension. If desired, the extension may be adjustable in length, ordinarily is not necessary nor desirable.

The extension 19 is preferably made long enough to open puppet 27 and so permit the'intermingling with the gas, air or vapors in passage 12 of any vapors, air or gases from pipe 23, the time of opening of the pu'ppel bcingso arrange that the admixonly during the periods when the engine may be voperating under appreciable loads and when the throttle valve is therefore open to an appreciable extent. At other times, the puppet remains closed and so prevents the intermingling of the contents of passage 23 and chamber 25, with the contents of passage 12, as when the engine may be operating under no load or when the load is more or less reduced and the throttle valve is therefore closed or nearly closed. A suitable hand operated valve of any type 33 may be for the auxiliary fluid supply and the details of the .puppet valve 27 may be changed and the valve body 30 may be made integral with the throttle case i or separate therei cm. I

It will be understood that details in size, proportion and arrangement of many of the parts of the .structure herein illustrated, may be made without departing irom the spirit of my pended claims.

I claim 1. In a devire of the character described, the combination of a throttle case, a valve stem slidingly mounted therein, a valve head carried by said stem and adapted for movement into throttling relation with said case when the same is moved manually, said head being adapted to slide along said stem to automatically govern the passage 0 fluid through the case, substantially as described. 2. In a device of the character described, the combination of a thrpttle case, a valve stem slidingly mounted therein, a valve head carried by said stern and cooperating with said case to'act as a throttle, manually operated means for shi ting said stem to throttle 4 the flow of fluid th ough said case/said head being slidingly mounted on said stemfa-nd though this bustion engine, of a fluid passage .with respect to its casing,

means restraining the combination invention as defined by the rip-- site sides of saidvalve also on the fiow oi independ- Y fluid pressure on the oppo:

fluid through the case and automatically moving to limit the flow of fluid through the case. 4. The coinbination of an internal comleading thereto and a throttleivalve positioned to manually control the admission of iluid to said passage, the valve head of said throttle valve having movement independent of the valve stem and acting automaticallyto limit the passage ct lluid through the throttle valve, irrespective of the manual setting of that valve.

5. In a device of the character described,

the combination of a valve stem, a valve head 'slidingly mounted thereon, a casing inclosing said head and throughwhich fluidmay be admitted to an internal combustion engine, manually operated means for shiitingsaid valve stem to ing fluid by movement'of the valve hea and, yielding the movement o'r'. said. head along the valve stem when fluid is pass ing through the casing. p

6. In a device of the character described, of a throttle casing, a man ually operated valve stem slidingly mounted therein, a valve head mounted. on said stem and capable of movement with respect thereto, resilient means for holding said head against movement, said resilient means being adjusted to counterbalance the tendency towa d displacement of the valve head. when fluid is passing through the case, thereby allowing said head to Work in conjunction with the case to govern automatically the passing of fluid through the case, whatever may be the manual setting of the valve stem.

7. In a device of the character described, the-combinatio of a throttle case, a valve head-positioned to cooperate therewith in governing the passage of fluid through said case, a valve stem \vhereon said valve head is slidingly mounted, an cutension' of said valve stem, and an auxiliary valve positioned to be opened by said extension to admit supplementing fluid to the throttle casing under predetermined conditions.

8. In a device of the character described,

the combination of a throttle casing having throttle the incominlet ports for fluid, a valve head positioned said supplemental valve simultaneously with Withinsaid casing and capable of movement the manual shifting of the throttle valve.

to throttle the fluid passing through said In witness whereof, I hereunto subscribe casing, manually operated means for shiftmy name to this specification in the presence 6 'ing said valve head, sfaid head having movei of two witnesses.

ment independent 0 said -manual contro to hutoinatically govern the passage. of ALBERT ZIEGLER' fluid, an auxiliary valve positioned in said Witnesses:

throttle case to control the admixture of a J-. P. FITCH,

1o supplementing fluid, and means for opening N. WISEMAN. 

